CN218467567U

CN218467567U - Hole-expandable drill bit for oil and gas excavation

Info

Publication number: CN218467567U
Application number: CN202221747748.4U
Authority: CN
Inventors: 支瑞雪; 谢雨淋; 吴影; 李婕; 吴超; 刘俊利; 朱玉清; 欧觊睿; 熊尹; 彭洁
Original assignee: Chongqing University of Arts and Sciences
Current assignee: Chongqing University of Arts and Sciences
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2023-02-10
Anticipated expiration: 2032-07-08

Abstract

The utility model provides a hole-enlarging drill bit for oil gas excavation, which comprises a connecting part (10), a hole-enlarging part (20) and a drilling part (30); a double-end motor (21) is fixedly arranged in the middle of the reaming part (20), an output shaft at the upper end of the double-end motor (21) is connected with a first screw (211), and an output shaft at the lower end of the double-end motor (21) is connected with a second screw (212); the outer wall of the first screw rod (211) is in threaded connection with a first sliding block (213), and the outer wall of the second screw rod (212) is in threaded connection with a second sliding block (214); the outer wall of the reaming part (20) is respectively provided with a plurality of first vertical sliding grooves (24) and second vertical sliding grooves (25), and the first vertical sliding grooves (24) are connected with a fastening block (240) in a sliding manner, and the second vertical sliding grooves (25) are connected with a drill block (250) in a sliding manner. The drill bit can enlarge the diameter of the oil and gas well in the drilling process without manually replacing the drill bit, effectively saves the time for replacing the drill bit, saves the labor productivity and improves the drilling efficiency.

Description

Hole-expandable drill bit for oil and gas excavation

Technical Field

The utility model relates to an oil gas excavation technical field, concretely relates to oil gas is excavated with reamer bit.

Background

The oil and gas mining engineering, namely oil and gas exploration, obtaining geological data of oil and gas reservoirs and exploiting liquid resources such as oil, natural gas and the like. Petroleum and natural gas are buried in underground layers, and in order to exploit and utilize the petroleum and natural gas for production and life, an oil-gas channel is usually required to be established between the ground and the underground oil (gas) layer, namely an oil-gas well is established; the prior art generally realizes that a channel with a certain depth is formed from the surface to the underground oil (gas) layer by drilling a well through a drill bit.

In the drilling process, the diameter of an oil-gas well is usually enlarged according to actual needs, so that oil and gas in the deep layer of the ground can be better mined. However, the drill bit of the existing oil and gas drilling device is usually of a fixed diameter, and if the diameter of the oil and gas well is to be enlarged, the large-diameter drill bit needs to be replaced manually, for example, the solution described in chinese patent document CN112593860A, which wastes the drilling time and labor productivity greatly, and reduces the drilling efficiency; meanwhile, frequent replacement also easily causes severe aging of the joint of the drill bit and the rotating rod. In addition, because the underground structure is complicated, the diameter of the upper part of the drill bit is not changed after the drill bit is replaced, the collapse of the side wall of the oil-gas well at the upper part of the drill bit due to the fact that the effective support is lost after the drill bit is expanded is easy to cause, the drill bit is submerged, the drill bit is not easy to withdraw, the stress of the drill bit and the drill rod is changed, the deviation occurs, and the deviation deviates from a planned oil-gas channel in advance.

SUMMERY OF THE UTILITY MODEL

In view of the problems existing in the prior art, the utility model aims to provide a hole-expanding drill bit for oil and gas mining, which can realize the diameter expansion in the drilling process of an oil and gas well without artificially replacing the drill bit, thereby effectively saving the time for replacing the drill bit, saving the labor productivity and improving the drilling efficiency; simultaneously, this drill bit can also fasten the oil gas well lateral wall on drill bit upper portion in the reaming, avoids the oil gas well lateral wall to appear collapsing owing to lose the holding power, causes the unable problem that withdraws from of drill bit or the orbit is predetermine in the drilling rod skew.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides an oil gas is excavated with reamer bit which characterized in that: the reaming part is connected with the upper end of the reaming part, and the drilling part is connected with the lower end of the reaming part; a double-end motor is fixedly arranged in the middle of the reaming part, an output shaft at the upper end of the double-end motor is connected with a first screw rod, and an output shaft at the lower end of the double-end motor is connected with a second screw rod; the outer wall of the first screw is in threaded connection with a first sliding block, and the outer wall of the second screw is in threaded connection with a second sliding block; the reaming part is positioned on the outer wall of the first screw rod section and is uniformly provided with a plurality of first vertical sliding grooves around the axis of the first screw rod, the fastening block is connected in the first vertical sliding grooves in a sliding manner, and the middle part of one side, close to the first screw rod, of the fastening block is connected with the first sliding block through a first connecting rod; the reaming part is positioned on the outer wall of the second screw section and is uniformly provided with a plurality of second vertical sliding grooves around the axis of the second screw, and the second vertical sliding grooves are connected with a drill block in a sliding mode, and the middle of one side, close to the second screw, of the drill block is connected with the second sliding block through a third connecting rod.

Preferably, the middle part of the reaming part is provided with a motor cavity, the double-end motor is arranged in the motor cavity, and the double-end motor is fixed and protected through the motor cavity.

Preferably, in order to ensure the stable sliding of the fastening block, one end of the first screw, which is far away from the double-head motor, is rotatably connected with the first fixing block, and the first fixing block is arranged at the top end inside the hole expanding part; the first fixing block is connected with the middle part of one side, close to the first screw, of the fastening block through a second connecting rod; and the two ends of the first connecting rod and the second connecting rod are respectively connected with the bearing seats.

Preferably, in order to ensure the stable sliding of the drill bit block, one end of the second screw rod, which is far away from the double-head motor, is rotatably connected with the second fixed block, and the first fixed block is arranged at the bottom end inside the hole expanding part; the second fixed block is connected with the middle part of one side, close to the second screw, of the drill bit block through a fourth connecting rod; and the two ends of the third connecting rod and the fourth connecting rod are respectively connected with a bearing seat.

Preferably, the cross section of the first sliding block is any one of a square, a regular pentagon, a regular hexagon, a regular heptagon and a regular octagon; the number of the corresponding first vertical sliding chutes is 4-8.

Preferably, the cross section of the second sliding block is any one of a square, a regular pentagon, a regular hexagon, a regular heptagon and a regular octagon; the number of the corresponding second vertical sliding chutes is 4-8.

Preferably, the height of the fastening block is greater than the length of the first screw, the height of the drill bit block is greater than the length of the second screw, and the height of the fastening block is greater than the height of the drill bit block.

Preferably, a plurality of rollers are uniformly arranged on one end surface (namely the outer surface of the fastening block) of the fastening block, which is far away from the first screw, and the axes of the rollers are parallel to the axis of the first screw; and a plurality of transverse cutting teeth are arranged on one end surface (namely the outer surface of the drill bit block) of the drill bit block far away from the second screw rod.

Preferably, the lower end of the connecting part is fixedly connected with the upper end of the reaming part, the inner wall of the drilling part is in sliding connection with the outer wall of the reaming part, and the bottom surface of the inner side of the drilling part is connected with the bottom surface of the reaming part through a buffer spring; the central axes of the connecting part, the reaming part and the drilling part are collinear.

The utility model discloses has following technological effect:

the double-head motor is started, so that the first screw rod and the second screw rod can rotate; the drill bit block is pushed to move towards the direction far away from the axis in the reaming part through the matching of the second sliding block and the third connecting rod, so that the diameter of the reaming part of the drill bit is changed, and the primary drilling of the drilling part is matched to realize the reaming of the oil-gas well; the cooperation through first slider and first connecting rod promotes the fastening block to keeping away from the direction motion of axis in the reaming portion for the diameter of fastening block is unanimous with the diameter of drill bit block section, thereby carries out compaction, fastening through the fastening block outer wall to the oil gas well lateral wall after the reaming of drill bit block, avoids appearing collapsing after the reaming of oil gas well lateral wall, and then makes things convenient for withdrawing from of drill bit, avoids appearing the drilling rod axis skew.

The reaming to the oil gas well can be realized through self adjustment to this application drill bit, effectively avoids the problem that the drill bit that the artificial change drill bit brought and drilling rod junction are ageing serious, extravagant plenty of time and labour to improve drilling efficiency. In addition, this application simple structure, convenient operation can be applicable to the oil gas reservoir's under most the circumstances excavation and reaming, and application scope is wide.

Drawings

Fig. 1 is a schematic view of an overall structure of a reamer head according to an embodiment of the present invention.

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

10, a connecting part; 20. a reaming section; 21. a double-headed motor; 210. a motor cavity; 211. a first screw; 212. a second screw; 213. a first slider; 2130. a first link; 214. a second slider; 2140. a third link; 22. a first fixed block; 220. a second link; 23. a second fixed block; 230. a fourth link; 24. a first vertical chute; 240. a fastening block; 2400. a roller; 25. a second vertical chute; 250. a drill block; 2500. cutting teeth; 30. drilling a hole part; 31. a buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Example 1:

as shown in fig. 1 to 3, a hole-expandable drill bit for oil and gas mining is characterized in that: the drilling device comprises a connecting part 10, a hole expanding part 20 and a drilling part 30, wherein the lower end of the connecting part 10 is fixedly connected with the upper end of the hole expanding part 20, the drilling part 30 is connected with the lower end of the hole expanding part 20, the inner wall of the drilling part 30 is slidably connected with the outer wall of the hole expanding part 20, and the bottom surface of the inner side of the drilling part 30 is connected with the bottom surface of the hole expanding part 20 through a buffer spring 31 (in the drilling process, when the bottom of the drilling part 30 touches a hard rock layer, the drilling part 30 is buffered through the buffer spring 31, and the drilling part 30 is prevented from being broken); the central axes of the connecting portion 10, the reaming portion 20, and the drilling portion 30 are collinear (as shown in fig. 1).

A double-headed motor 21 is fixedly arranged in the middle of the reaming part 20, namely, a motor cavity 210 is formed in the middle of the reaming part 20, the double-headed motor 21 is fixedly arranged in the motor cavity 210, and the double-headed motor 21 is fixed and protected through the motor cavity 210 (as shown in fig. 1); an output shaft at the upper end of the double-head motor 21 is fixedly connected with a first screw 211 through a coupler, and an output shaft at the lower end of the double-head motor 21 is fixedly connected with a second screw 212 through a coupler. The outer wall of the first screw 211 is in threaded connection with a first sliding block 213, and the outer wall of the second screw 212 is in threaded connection with a second sliding block 214; the reaming part 20 is positioned on the outer wall of the first screw 211 section and is uniformly provided with a plurality of first vertical sliding grooves 24 around the axis of the first screw 211, the first vertical sliding grooves 24 are connected with a fastening block 240 in a sliding manner, the middle part of one side, close to the first screw 211, of the fastening block 240 is connected with the first sliding block 213 through a first connecting rod 2130, two ends of the first connecting rod 2130 are respectively connected with a bearing seat, the bearing seat, located at one end of the first sliding block 213, of the first connecting rod 2130 is fixedly connected with the outer side wall of the first sliding block 213, and the bearing seat, located at one end of the middle part of the fastening block 240, of the first connecting rod 2130 (namely, a first bearing seat) is fixedly arranged on the first sliding seat; one end of the first screw 211, which is far away from the double-end motor 21, is rotatably connected with the first fixing block 22, the first fixing block 22 is fixedly arranged at the top end inside the hole expanding part 20 (as shown in fig. 1), the first fixing block 22 is connected with the middle part of one side, which is close to the first screw 211, of the fastening block 240 through the second connecting rod 220, two ends of the second connecting rod 220 are respectively connected with the bearing seats, the bearing seat, which is located at one end of the first fixing block 22, is fixedly connected with the outer side wall of the first fixing block 22, the bearing seat, which is located at one end of the middle part of the fastening block 240, of the second connecting rod 220 (i.e., the second bearing seat), is fixedly arranged on the first sliding seat, the central axes of the first and second bearing seats are collinear, a third vertical sliding groove or a first vertical sliding rod is arranged on one side surface of the fastening block 240, which is close to one side of the first screw 211, the first sliding seat is clamped into the third vertical sliding groove or the first sliding seat is sleeved on the first vertical sliding rod (as shown in fig. 1 and 2, the third vertical sliding groove is arranged, and the first sliding seat is arranged, and the first vertical sliding seat can be understood by those skilled in the art, and the embodiment of the present application do not much discussed in the present application. The reaming part 20 is located on the outer wall of the second screw 212 section and is uniformly provided with a plurality of second vertical chutes 25 around the axis of the second screw 212, the drill block 250 is connected in the second vertical chute 25 in a sliding manner, the middle part of one side of the drill block 250, which is close to the second screw 212, is connected with the second slider 214 through a third connecting rod 2140, two ends of the third connecting rod 2140 are respectively connected with a bearing seat, the bearing seat of the third connecting rod 2140, which is located at one end of the second slider 214, is fixedly connected with the outer side wall of the second slider 214, and the bearing seat (i.e., the third bearing seat) of the third connecting rod 2140, which is located at one end of the middle of the drill block 250, is fixedly arranged on the second slider; one end of the second screw 212, which is far away from the double-headed motor 21, is rotatably connected with the second fixed block 23, the first fixed block 23 is arranged at the bottom end inside the reaming portion 20 (as shown in fig. 1), the second fixed block 23 is connected with the middle of one side, which is close to the second screw 212, of the drill block 250 through a fourth connecting rod 230, two ends of the fourth connecting rod 230 are respectively connected with a bearing seat, located at one end of the second fixed block 23, of the fourth connecting rod 230 is fixedly connected with the outer side wall of the second fixed block 23, a bearing seat, located at one end of the middle of the drill block 250, of the fourth connecting rod 230 (i.e., a fourth bearing seat), is fixedly arranged on a second sliding seat, the third bearing seat and a fourth bearing seat central axis are collinear, a fourth vertical sliding groove or a second vertical sliding rod is arranged on one side surface, which is close to the second screw 212, of the drill block 250, the second sliding seat is clamped into the fourth vertical sliding groove or sleeved on the second vertical sliding seat and is slidably connected (as shown in fig. 1 and fig. 3, the fourth vertical sliding groove is arranged, and the arrangement of the second vertical sliding rod can be understood by technicians in the embodiments of the present application, and the present application, too many embodiments are not discussed.

The cross section of the first slider 213 is any one of a square, a regular pentagon, a regular hexagon, a regular heptagon, and a regular octagon; the number of the corresponding first vertical chutes 24 is 4-8; as shown in fig. 2, the cross section of the first sliding block 213 is a regular pentagon, and the number of the first vertical sliding grooves 24, the fastening blocks 240, the first connecting rods 2130 and the second connecting rods 220 is 5, and the first vertical sliding grooves, the fastening blocks 240, the first connecting rods 2130 and the second connecting rods 220 are uniformly distributed around the central axis of the first screw 211. The cross section of the second slider 214 is any one of square, regular pentagon, regular hexagon, regular heptagon and regular octagon; the number of the corresponding second vertical sliding chutes 25 is 4-8; as shown in fig. 3, the second sliding block 214 is a regular hexagon, and the second vertical sliding slot 25, the drill block 250, the third connecting rod 2140, and the fourth connecting rod 230 are all 6 and are uniformly distributed around the central axis of the second screw 212.

The height of the fastening block 240 is greater than the length of the first screw 211, the height of the drill block 250 is greater than the length of the second screw 212, and the height of the fastening block 240 is greater than the height of the drill block 250. A plurality of rollers 2400 are uniformly arranged on one end surface of the fastening block 240, which is away from the first screw 211 (i.e., the outer surface of the fastening block 240), and the axes of the rollers 2400 are parallel to the axis of the first screw 211, and the rollers 2400 are arranged on the outer surface of the fastening block 240 through rotating rods, i.e., the rollers 2400 can rotate on the outer surface of the fastening block 240; the end surface of the block 250 distal from the second screw 212 (i.e., the outer surface of the block 250) is provided with a plurality of transverse cutting teeth 2500.

Example 2:

double-end motor 21's wire is by connecting portion 10 upper end run through connecting portion 10 axis in proper order, 20 top surface axis of reaming portion, 22 axes of first fixed block, first screw 211 axis and be located motor chamber 210, and the wire is fixed to be set up in connecting

portion

10, 20 top surfaces of reaming portion, first fixed block 22, first screw 211 simultaneously to avoid rotating the winding problem of wire in-process.

The working principle is as follows:

when the drilling tool is used, the connecting part 10 is fixedly arranged on a drill rod, and then the drill rod is started to drive the whole drill bit to rotate, so that drilling is realized.

When the oil-gas well needs to be reamed, the drill rod stops rotating, the double-head motor 21 is started to rotate, the double-head motor 21 drives the first sliding block 213 to move upwards as shown in fig. 1 and the second sliding block 214 to move downwards as shown in fig. 1 through the first screw 211 and the second screw 212 respectively, the first sliding block 213 moves upwards to push the fastening block 240 to slide towards one side far away from the first screw 211 through the first connecting rod 2130, the first sliding seat slides upwards, the second sliding block 214 moves downwards to push the drill block 250 to slide towards one side far away from the second screw 212 through the third connecting rod 2140, and the second sliding seat slides downwards, so that the diameters of the drill block 250 section and the fastening block 240 section are enlarged; then, the double-head motor 21 is stopped, the drill rod is started to rotate, the drilling part 30 firstly drills with small diameter, then the cutting teeth 2500 at the section of the drill block 250 enlarge the small-diameter hole, and the rolling shafts 2500 at the section of the fastening block 240 compact the hole wall after hole expansion, so that the hole wall after hole expansion is prevented from collapsing due to the fact that the support of the outer wall of the drill rod is lost; after drilling finishes, stop the drilling rod and rotate, start double-end motor 21 upset to make fastening block 240 retrieve with drill bit block 250, until recovering initial condition (do not ream the state promptly), the drill bit and the drilling rod diameter of this moment all are less than the aperture after the reaming, consequently the drill bit can be comparatively convenient with the drilling rod retrieve, can not contact with the hole lateral wall.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides an oil gas is excavated with reamer bit which characterized in that: the reaming hole comprises a connecting part, a reaming part and a drilling part, wherein the connecting part is connected with the upper end of the reaming part, and the drilling part is connected with the lower end of the reaming part; a double-end motor is fixedly arranged in the middle of the reaming part, an output shaft at the upper end of the double-end motor is connected with a first screw rod, and an output shaft at the lower end of the double-end motor is connected with a second screw rod; the outer wall of the first screw is in threaded connection with a first sliding block, and the outer wall of the second screw is in threaded connection with a second sliding block; the reaming part is positioned on the outer wall of the first screw section and is uniformly provided with a plurality of first vertical chutes around the axis of the first screw, the first vertical chutes are internally and slidably connected with the fastening block, and the middle part of one side, close to the first screw, of the fastening block is connected with the first sliding block through a first connecting rod; the reaming part is positioned on the outer wall of the second screw rod section and is uniformly provided with a plurality of second vertical sliding grooves around the axis of the second screw rod, the drill bit block is connected in the second vertical sliding grooves in a sliding mode, and the middle of one side, close to the second screw rod, of the drill bit block is connected with the second sliding block through a third connecting rod.

2. The reamer bit for oil and gas mining of claim 1, wherein: the middle part of the reaming part is provided with a motor cavity, and the double-end motor is arranged in the motor cavity.

3. The reamer bit for oil and gas extraction of claim 1, wherein: one end of the first screw, which is far away from the double-head motor, is rotationally connected with the first fixing block, and the first fixing block is arranged at the top end inside the hole expanding part; the first fixing block is connected with the middle part of one side, close to the first screw, of the fastening block through a second connecting rod; and the two ends of the first connecting rod and the second connecting rod are respectively connected with the bearing seats.

4. The reamer bit for oil and gas extraction of claim 3, wherein: one end of the second screw, which is far away from the double-head motor, is rotationally connected with the second fixing block, and the first fixing block is arranged at the bottom end inside the hole expanding part; the second fixed block is connected with the middle part of one side, close to the second screw, of the drill bit block through a fourth connecting rod; and the two ends of the third connecting rod and the fourth connecting rod are respectively connected with the bearing seats.

5. The reamer bit for oil and gas extraction of claim 1, wherein: the cross section of the first sliding block is any one of a square, a regular pentagon, a regular hexagon, a regular heptagon and a regular octagon; the number of the corresponding first vertical sliding chutes is 4-8.

6. The reamer bit for oil and gas extraction of claim 1, wherein: the cross section of the second sliding block is any one of a square, a regular pentagon, a regular hexagon, a regular heptagon and a regular octagon; the number of the second vertical sliding chutes is 4-8.

7. The reamer bit for oil and gas mining of claim 1, wherein: the height of the fastening block is greater than the length of the first screw rod, the height of the drill bit block is greater than the length of the second screw rod, and the height of the fastening block is greater than the height of the drill bit block.

8. The reamer bit for oil and gas extraction of claim 1, wherein: a plurality of rolling shafts are uniformly arranged on the surface of one end, far away from the first screw, of the fastening block, and the axes of the rolling shafts are parallel to the axis of the first screw; and a plurality of transverse cutting teeth are arranged on the surface of one end, far away from the second screw, of the drill block.

9. The reamer bit for oil and gas extraction of claim 1, wherein: the lower end of the connecting part is fixedly connected with the upper end of the reaming part, the inner wall of the drilling part is connected with the outer wall of the reaming part in a sliding mode, and the bottom surface of the inner side of the drilling part is connected with the bottom surface of the reaming part through a buffer spring; the central axes of the connecting part, the reaming part and the drilling part are collinear.